The bookmark feature now works on IE7. There was a little bug in there, or maybe it actually is in Microsoft's Internet Explorer 7, since it worked with all other browsers I tried. Workaround implemented.
Additionally, I've finally moved the few help texts which can be opened by the '?' links to templates, so that they can be translated to other languages. This has been requested quite a few times. They're quite long, and I should probably write more of those, which will mean more work for the volunteer translators. Again, a big THANK YOU to all of you – translations are a very valuable contribution and they do help a lot of users to understand the site!